Jan is Professor of Clinical Effectiveness, Honorary Consultant in Paediatric Dentistry, University of Dundee, Professor of Clinical Dental Research at University of Manchester and Associate Postgraduate Dental Dean, NHS Education for Scotland. She is an internationally acknowledged leader in Oral Health for the generation, synthesis and implementation of evidence to prevent and treat oral disease world-wide. She leads dental guideline development in Scotland and multidisciplinary health services research to challenge established clinical practice and delivery of routine dental care. She has led the largest primary dental care trials in the world to establish the evidence for common, costly treatments and the development of minimally invasive dentistry. The evidence generated has informed clinical practice guidelines across the world and changed policy.